Top and section view of the septic tank in AutoCAD 2D drawing, CAD file, dwg file
<p>Top and section view of the septic tank in AutoCAD 2D drawing. Septic tanks are underground, onsite, small-scale sewage treatment systems that collect sewage for bacterial breakdown. Sewage is a collection of wastewater from home, commercial, or industrial sources. For more detailed knowledge and information download the 2D AutoCAD file. </p>